I hope your not talking about Heavy Metal as a sub genre. There is no sub genre called heavy metal. All metal bands ever existed are Heavy Metal just with different sounds. Or maybe you're asking:Wich band do you think is the best?

I hope your not talking about Heavy Metal as a sub genre. There is no sub genre called heavy metal. All metal bands ever existed are Heavy Metal just with different sounds. Or maybe you're asking:Wich band do you think is the best?